Cylinder for electroplating apparatus and the like



F. T. TAYLOR AND w. F. HALL.

CYLINDER FOR ELECTROPLATING APPARATUS AND THE LIKE. APPLICATION FILED mAY13, L918.

,37 052 Patented Apr. 26, 1921.

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/Z I I Hhhh I ATTO F. T. TAYLOR AND W.-F. HALL.

CYLINDER FOR ELECTROPLATING APPARATUS AND THE LIKE.

APPLICATION FILED MAYIQ, IQIB- 1,3?6fi52, Patented Apr. 26, 1921 3 SHEETSSHEEI 2 QQQQQQQQQQ GQ F. T. TAYLOR AND W. F. HALL. CYLINDER FOR ELECTROPLATING APPARATUS AND THE LIKE.

Patented Apr. 26, 1921.

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APPLICATION -F |LED MAY-13,1918.

ATTORN FLOYD T. TAYLOR AND WESLEY F. HALL, OF MATAWAN, NEW JERSEY, ASSIGNORS TO MUNNING-LOEB COMPANY, OF MATAWAN, NEW JERSEY, A CORPORATION OF NEW JERSEY.

CYLINDER FOR ELECTROPLATING APPARATUS AND THE LIKE.

raveosa.

Specification of Letters Patent.

Patented Apr. 26, 1921.

Application filed May 13, 1918. Serial No. 234,213. 7

the like, of which the following is a specification.

This invention relates to electro-plating and similar apparatus.

Apparatus for electro-plating, washing or rinsing small articles usually comprises a vat containing a rotating foraminous cylinder. The articles are placed inside of the cylinder and when the cylinder is rotated the articles are uniformly acted upon by the solution in the vat and in the cylinder.' In electro-plating and similar apparatus as heretofore constructed, it has been found that the portion of the li uid orsolution inside. of the cylinder ten s to remain in the cylinder and to remain somewhat separate from-the portion of the solution outside of the cylinder. In other words, the solution does not tend to circulate from the exterior of the cylinder to the interior thereof and vice versa. This has been found to be true in apparatus in which the cylinder was made up of perforated panels of wood, celluloid or the like, but is particularly true with a cylinder made of canvas or the like due to the somewhat impervious nature of this material. One object of this invention is to provide an apparatus of the above character in which thecylinder is so constructed as to c ause a positive circulation of the liquid from the interior to the exterior 'of the cylinder and vice versa.

Another object is to so construct the cylinder that it may be readily taken apart.

Another object is to reduce to a minimum the amount of metal used in the constru'ction of the cylinder.

Other objects and advantages will hereinafter appear.

Several embodiments of the invention are illustrated in the accompanying drawings;

The views of the drawings are as follows: Figure 1 is a vertical longitudinal section of an apparatus constructed in accordance with the invention; 1

Fig. 2 is a transverse section of the cylinder taken on the line 2-42 of Fig. 1;

Fig. 3 is a longitudinal section of the cylinder taken on the line 33 of Fig. 2;

Fig. 4: is a plan view of that portion of the cylinder with which the removable door or closure is associated;

Fig. 5 isa transverse section taken on the hue 5-5 of Fig. 4;

Fig. 6 is atransverse section taken on the line 6-6 of Fig. 4;

Fig. 7 is a detail perspective view showing certain details of construction;

Fig. 8 is a plan view partly in section of a modified form of cylinder, the sectionbeing taken on the line 8-8 of Fig. 9; and

Fig. 9 is a transverse section of the cylinder shown in Fig. 8.

In Fig. 1 the vat in which the solution is placed is shown at 1. It may be dfusual construction and it may have the usual means for supporting and rotating a cylinder 2 and for driving the same. The bearings for the cylinder are shown at 3 and 4 and are of the open type so that the cylinder may be removed from the vat. A loose gear 5 is coaxially disposed with respect to the bearing 4 and this gear carries a guide 6 to receive a projection 7 on the cylinder 2 when the cylinder is positioned in the vat, It is obvious that by this construction the cylinder may be readily removed from and replaced in the vat, and when it is in the vat from a pinion 8 carried by a driving shaft journaled-in the bracket'9. The driving shaft may be driven from any suitable source of. power by a belt passing over the friction pulley 10.

The portion of scribed may be of the usual construction. However,;. the cylinder now to be described -is constructed in a novel manner.

the apparatus so far de- The cylinder comprises the end portions material. Two of these panels, as for instance those shown at 16, are removable as a unit from the cylinder to constitute a door or a closure which when removed permits the articles to be placed in the cylinder. This may be accomplished by securing the two panels 16 and the intermediate bar 13 together by means of an are shaped end piece 137. Dovetail projections 18 on the ends of.

the panels 16 may engage in corresponding recesses in the member 17 and the bar 13 may besecured to the member 17- by the dowelpin 19. The other ends of the pan els 16 are provided with pins or projectionsv the right hand end of the door is lowered until the bolt of the latch 21 snaps in place.

When the apparatus is used for electroplating or the like, current may be supplied to the articles in the cylinder by means of the danglers 21. 1 The articles constitute the cathode, and the anode, which is not shown,

ma be positioned in the vat 1.

. Iii will be noted that the panels 15 and 16 are supported a considerable distance within the outer periphery of the cylinder. This causes each panel together with. the adjacent 'bars 13 and the heads 11 and 12 to form pockets 22. These pockets are of sufficient size to lift a considerable quantity of the solution from the vat 1 as the cylinder rotates. In order to more efi'ectively resist .the flow of the solution out of said pockets, as they are being raised, the sides of the bars 13 may be rooved as shown at 13'. This causes a eircu ation of the solution from the interior to the exterior of the cylinder and vice versa in the following manner. As

the cylinder rotates, the pockets 22 lift a portion of the solution fromthe vat. The removal of this quantity of the solution from the exterior of the cylinder causes an equal quantity of the solution to flow from the in- 'terior of the cylinder through the perforations in the panels to the exterior of the cylinder so as to maintain the level of the solution, As the cylinder further rotates, that quantity of thesolution which has been lifted'by the pockets percolates through the perforations in the panels and drops into the interior of the cylinder. There is therefore a positive and continual interchanging of r the solution on the inside and the outside of the cylinder.

The panels of the cylinder are sometimes made of canvas or similar material as shown in Figs. 8 and 9. In such a construction, even when the pockets 22 are provided, there may not be sufiicient circulation of the solution because the solution which is lifted by the pockets does not readily percolate through the canvas, nor can the solution cut in the canvas between each pair of bars 13. A flap 27 preferably of canvas is secured along one or more of its edges to the web 23 under each opening 26. These flaps constitute valves which will open under the weight of the solution in the pockets22 as the cylinder rotates. The solution in the pockets is therefore released and permitted to flow through the relatively large openings into the nterior of the cylinder. The

flaps therefore do not restrict the flow of the solution from the pockets into the cylinder, but they constitute closures for the openings to prevent the articles in the cylinder from dropping through the openings. Obviously complishing this same purpose.

' It will now be seen that the pockets formed on the cylinder constitute means for setting up a positive circulation of the solution in the cylinder and the vat. tion on the inside and the outside of the cylinder is therefore constantly interchanging. Similar apparatus as heretofore constructed had no means for causingthis circulation and therefore there was nothing to cause an interchange in the fluid on the inside and the outside of the cylinder even when the panels were provided with suflicient perforations to permit a somewhat free flow of the solution through the panels.

As the cylinder is held together by dowel pins it may be more readily. taken.v apart than if screws, bolts or other fastening means were employed. Furthermore by using dowel pins the amount of metal used in the construction of the c linder is reduced to a minimum, and this, or course, is an advantage when-the cylinder is used for el'ec tro-plating and similar purposes.

Although the invention has been described in connection with the cylinder of an electroplating apparatus itis obvious that it may e applied to practically an type of apparatus in which it is desire to produce a circulation of liquid from the interior to the exterior, and vice versa, of a foraminous cylinder rotating in a body of liquid.

The solu-,.

other means could be used for acremote What we claim iez- 1. The combination of a vat adapted to contain a liquid, and a foraminous cylinder mounted to rotate therein, said cylinderhaving means whereby the cylinder in rotating lifts a material amount of the liquid from the vat and admits it to the interior of the cylinder.-

2. 'l'Lhe combination of a receptacle for holding liquid, and a foraminous cylinder mounted to rotate therein, said cylinder having means to produce a positive interchange of the liquid on the inside and the outside of the cylinder,

3. The combination of a vat for containing a liquid, and a toraminoua cylinder rotatably mounted therein, said cylinder hav ing pockets formed, upon the outer periphery thereof, and arranged to lift a material quantity of saidiliquid on its rising side, and allowing the liquid to run outwardly from the cylinder on its fallin and bottom side.

4:. The combination 0 a vat for contain ing a liquid, and a cylinder rotatably mounted therein, said cylinder comprising a foraminous body portion, and a series of pockets formed on the outer periphery of said body ortion, said pockets being arranged to hit the liquid and discharge the same into the cylinder on the rising side of said cylinder, and to further allow the liquid to run outwardly from the cylinder on its falling and bottom side unimpeded by back pressure caused by the rotation of the cylinder.

5. Apparatus or the kind described comprising a receptacle for holding liquid and a cylinder mounted to rotate therein, said cylinder having end heads and grooved, longitudinal connecting bars dis osed near the periphery of the cylinder, toraminous panels located between said bars, each panel constituting a bottom of a pocket formed by panels to 6. A cylinder for use in electroplating and the like, comprising end heads, longitudinal bars extending therebetween, foraminous non metallic panels between said bars, said heads and bars being formed of non metallic material 'and non metallic dowel pins formed upon said longitudinal bars and connecting the same to the end heads, whereby a minimum of metal is em ployed in said cylinder,

7. A cylinder for use in electro-plating machines and the like having a plurality of panels provided with openings therein, means whereby a pocket is formed at the outer side of each panel so that when the cylinder is rotated in a liquid it may lift some of the liquid and admit it to the interior of the cylinder through said openings, and a movable closure for each of said openings adapted to permit entrance of the liquid from said pockets to the interior of the cylinder but adapted to prevent escape of articles in the cylinder through said openings.

v8. A. cylinder for use in electro-plating' machines and the like having a plurality of panels provided with openings therein, means whereby a pocket is formed at the outer side of each cylinder is rotated in a liquid it may lift some of the liquid and admit it to the in terior of the cylinder through said openings, and a closure for each of said openings adapted to open inwardly but not outwardly.

anel so that when the.

In witness whereof, we have hereunto subscribed our names.

FLUYD T. TAYLUR, .WESLEY F, HALL. 

